Spring-hinge.



0. KATZENBERGER.

SPRING HINGE.

APPLlCATlON FILED JULY 24.1915.

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Application file'd 'iui 24, 1 915. Serial marker.

To all whom it may concern:

*Be it known that I, Oscar. KATZENBERGER, acitizen of the UnitedStates, and a -resident of Chicago, in the county of Cook and State of Illinois, have invented anew and Improved Spring-Hinge, of which the following is a full, clear, and exact description. I

This invention relates to hinges and particularly to an improved form of spring hinge, and has for an object the provision of a light spring hinge construction in which friction is reduced to a minimum.

Another object in view is'to providea spring hinge construction which has the leaves pressed from single pieces of material and formed with ball races, whereby the weight on the hinge may be taken up by friction balls arranged in the ball races.

A still further object in view is to provide a spring hinge with ball races formed so that the balls arranged therein will take up the vertical thrust and also substantially all of the side or lateral thrust.

In the accompanying drawings,

Figure 1 is a plan view of a spring hinge embodying the invention;

Fig. 2 is a longitudinal vertical section through the barrel and associated parts shown in Fig. 1, and taken approximately on the line 22 of Fig. 3; and

Fig. 3 is a top plan view of the construction shown in Fig. 1.

Referring to the accompanying drawings by numerals, 1 and 2 indicate leaves preferably pressed from sheet metal, and during the pressing operation embossed portions 3 and 4 are provided which are adapted to receive securing screws or other securing means. Also during the pressing operation ears 5 and 6 are formed on leaf 2, while ears 7 and 8 are formed on leaf 1. It will be observed that the ears 5 and 6 are offset at 9 and 10 outwardly, while ears 7 and 8 are offset at 11 and 12 inwardly. Ears 5 and 6 are provided with pressed out embossed centers 13 and 14, whereby part of the ball races are provided for the balls 15 and 16. In order to complete the ball races embossed portions 17 and 18 are pressed from the ends 7 and 8 as clearly shown in Fig. 2. The embossed centers 13 and 14 are each provided with a countersunk aperture 19 in which the respective ends of the pintle 20 are riveted or upset, as shown in Fig. 2, whereby the parts are firmly held to Specification of Letters lat ent.

Patented Nov. 6, 1917.

getherwhile allowing a free swinging mo vement of the-respective leaves around the pintle '20. It'will be observed that by the construction of the various embossed portions producing the ball races, a structure is pr'ovided which causes the vertical strain to be taken up'by the balls and'also causes the 'trai'isv'e'r'se or horizontal strain to be taken up bythe balls, thus causing the parts to'al ays operate on anti-friction members. A'Isprin'g f22is coiled aroundthe pintle 20 and arranged so that the ends 23 and 24 press against the leaves 1 and 2 for urging the same in 'acertai'n direction. 'A suitable barrel 25 surrounds the spring 22 and extends from end number 23 to end number 24 thus giving a finished appearance to the entire spring structure.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a hinge of the class described, a pair of leaves formed with bent-up ends extending normal to the body of the leaves and with the extreme part of each end offset from the center line of the other part of the end so that the extreme portions of the ends of the leaves may overlap, both ends of one leaf being offset toward the center and both ends of the other leaf being offset away from the with a ball race, balls arranged in said ball race, a pintle extending through said end.

members, and a spring surrounding said pintle, said spring being formed with pro jecting ends adapted to act against said leaves.

2. In a hinge of the class described, a pair of leaves formed with bent-up ends extending normal to the body of the leaves, each of said bent-up ends being formed with pressedout portions and providing a ball race at each end of the hinge, balls arranged in said ball race, a pintle extending through said bent-up ends, and a spring surrounding said pintle, said spring being formed with projecting ends adapted to act against said leaves.

3. In a hinge of the class described, a pair of leaves formed with bent-up ends, each end being pressed out so as to form a ball race on one face thereof and an embossed portion on the other face, said ball races being comparatively deep balls arranged in said ball races adapted to take up the vertical strain and also adapted to take up the horizontal strain on the hinge, the outer edge of the ball races contacting With the balls When taking up the lateral or side strain, a pintle extending through said bent-up ends, and a spring formed with ends pressing against said leaves.

4. In a hinge of the class described, a pair of leaves formed with bent-up ends, each of said bent-up ends being provided with a depression, said depressions at the respective ends facing each other for producing a ball race, all of said bent-up ends having apertures therethrough, the outer bent-up end at each end of the hinge being formed with a countersunk portion, a pintle extending through said apertures in said bent-up ends, said pintle having the ends thereof riveted or upset so as to substantially fill said countersunk portions, a spring surrounding said pintle, said spring being provided with ends adapted to act against said leaves.

5. A hinge of the class described, comprising a pair of leaves, each having cars at its ends, the ears of one leaf being oifset outwardly and having embossed and apertured portions, and the ears of the other leaf being offset inwardly and having embossed and apertured portions, the embossed portions of adjacent ears projecting in opposite directions, whereby to form ball races in the opr posing faces of the ears, balls in said recesses, a pintle passing through the embossed portions of the ears, and a spring surrounding the pintle and having projecting ends engaging the leaves;

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OSCAR KATZENBERGER.

itnesses :7

OLGA LUND, ADoLPH PAUs'r.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

